What ℘ means
The Weierstrass p notation appears in C. Hermite's work from 1849; it later became linked with Weierstrass's theory. ℘ repeats along two independent directions on a plane of real and imaginary numbers.
In applications, wp abbreviates ℘; its rate of change describes elliptic curves and related equations. It also appears in classical motion problems with a cubic potential; Jacobi elliptic functions share the theory.
Formal mathematical notation for formulas and technical explanations.
Treat it as the Weierstrass function, not a styled P.
Part of the collection
Don't confuse it with
1Related characters
2
Questions people ask
1Why does ℘ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
More like this
10
How to type or find ℘
- Also called
- Weierstrass p · wp function
- Search it as
- wp · elliptic function
- Shows up in
- Anything that takes text · its shape is whatever your font draws
Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.